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local Renderer = {}
function Renderer:new()
local obj = { layers = {} }
setmetatable(obj, self)
self.__index = self
return obj
end
function Renderer:addFunctions(layer, obj, drawFuncs)
for _, drawFunc in pairs(drawFuncs) do
self:add(layer, obj, drawFunc)
end
end
function Renderer:add(layer, obj, drawFunc)
if not self.layers[layer] then
self.layers[layer] = {}
end
table.insert(self.layers[layer], { object = obj, draw = drawFunc })
end
function Renderer:draw()
-- 确保按照顺序绘制
local layerOrder = { "background", "objects", "ui" }
for _, layer in ipairs(layerOrder) do
if self.layers[layer] then
for _, item in ipairs(self.layers[layer]) do
item.draw(item.object)
end
end
end
end
-- initialization
function Renderer.init()
local renderManager = Renderer:new()
local drawObject = require "render.draws.objects"
local drawUI = require "render.draws.ui"
local drawBackground = require "render.draws.background"
renderManager:addFunctions("background", nil, drawBackground)
renderManager:addFunctions("objects", nil, drawObject)
renderManager:addFunctions("ui", nil, drawUI)
return renderManager
end
return Renderer
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